The train has been kept at the station as a murder probe is launched by travel cops

They added that he was "not dressed for the weather" in a T-shirt and tracksuit bottoms, and strikingly bright white trainers.

He said: "There were also three helicopters circling overhead when we locked up and went home.

"It was a bit alarming when someone I worked with put two and two together and we realised who the police were looking for.

"You sometimes see the police helicopter going over or cars going past with sirens on but to think there was someone like that potentially hiding around the corner somewhere certainly made us want to pack up and go home quicker than usual."

Detective Superintendent Gary Richardson from British Transport Police, described it as a "frightening incident for passengers".

He said: “This was a shocking and violent attack which took place on-board a train in broad daylight.

"Officers from BTP are with the family and have deployed a specially trained family liaison officer to support them through this difficult time.

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"We believe that the suspect and victim boarded the train at London Road at 1.01pm and we would encourage who was on this train to come forward regardless of whether or not they think they can help our investigation."

All lines have now reopened but National Rail have warned services may be cancelled or delayed.

Dozens of commuters cars were stranded in the car park at the Surrey station with owners told they would have to remain parked until forensic teams had completed their investigation.

The victim lived with his wife and their son in Guildford.
Police were still trying to contact close relatives last night before naming him.
He is said to have been an “ordinary hard-working family man”.

Anyone who witnessed the incident or with any information should contact BTP by sending a text to 61016 or by calling 0800 40 50 40 – quoting reference 210 of 04/01/19.

Or you can ring Crimestoppers anonymously on 0800 555 111.

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